CBN inserts for machining brake disc
With the rapid development of the automobile industry, people put forward higher requirements for the manufacture of automobile parts, brake disc, as an important part of automobile safe driving, has higher requirements for the quality of its products.
As the competition in the brake disc industry continues to intensify, more manufacturers use CNC special machines to process the brake discs, and correspondingly put forward higher requirements on the efficiency and life of the cutting tools. At this time, the Halnn superhard CBN inserts can be easily processed Brake discs and guarantee high surface quality and dimensional accuracy.
As the pioneer of superhaed cutting tools in China, Halnn offers high hardness cutting& high speed cutting tools and complete tooling solutions. As early as 2007, Halnn successfully developed the BN-S30 grade of the polycrystalline CBN inserts for high-speed cutting brake discs, breaking the monopoly of CBN inserts in the field of high-speed cutting gray cast iron.
Recently, Halnn has successfully developed a new generation of CBN material BNK30 grade, which can cut the brake disc at a cutting speed of 500-2000m/min, which can meet the stable cutting of brake disc parts, especially in finishing. The field performance advantage is more obvious, the tool life is doubled compared to traditional carbide tools and coated cardboard alloy tools.
Take BNK30 grade processing brake disc as an example:
Workpiece material: HT250;
Processing procedure: roughing;
Workpiece hardness: HB180-241;
Required surface finish: Ra1.6,
Insert type: BNK30 CNGN1204;
Cutting parameters: Vc=681m/min, Fr=1.0mm/r, ap=1mm,
Processing method: dry cutting.
Compared with the same products: under the same cutting parameters, the tool life of BNK30 grade processing brake disc is 1.45 times that of the same product.
Cutting Tool material
|
Cutting Speed (Vc)（m/min）
|
Feed Rate （Fr）
mm/r |
Cutting Depth(ap)
mm |
Tool Life
|
|
A company CBN inserts. |
681 |
1.0 |
1 |
100 |
|
Halnn superhard BNK30 |
681 |
1.0 |
1 |
145 |
Halnn superhard CBN inserts BNK30 grade can be made into two kinds of solid CBN inserts and brazed CBN inserts, The solid CBN inserts can be processed in roughing and finishing. For example, the brake disc has a small amount of allowance, and the inlaid type holed blade can be used directly. Using BNK30 grade machining brake discs, dry cutting processing methods reduce production costs and reduce environmental pollution.